Apparatus for coating metallic articles.



Nb. 7I4,69v7. 4 ,Paentedllem 2, |902.

Y J. H'RONECK.

APPARATUS Fon'cnATmG METALLIC ARTICLSES.-

V(Application med Aug. 2e, 1902.)-

I (No Model.) A

EYs

ATTORN "cams P UNITED STATES OF WORMS, GERMANY.

APPARATUS FOR COATING METALLIC ARTICLES.

SPECIFICATION formingpart of Letters Patent No. 714,697', dated December2, 1902.

Application filed August 26,1902. Serial No. 121,069. (No model.)

`the following is a full, clear, and exact description.

My invention relates to apparatus for coating metallic articlessuch asboxes, pipes, and the like-and has for its object to provide meanswhereby a uniform coating of paint or Vsimilar material may be producedon such articles in a short time for the purpose of protecting sucharticles against the iniuence of the weather, of acids, and otherinjurious substances.

The invention will be fully described hereinafter and the features ofnovelty pointed out in the appended claims.

An'example of my invention is given in the accompanying drawings, inwhich- Figure l is an elevation of my improved apparatus with parts insection. Fig. 2 is a cross-section thereof, and Fig. 3 is a plan.

It will be understood that my invention is not limited to thespecicconstruction shown, but the scope of the invention is indicated in theappended claims.

As shown, the apparatus comprises a base a, upon which rests a supporth, preferably .mounted to rotate about a vertical axis, so

that the articles carried by said support may be brought to anyconvenient position. A tubular support f is located centrally-that is,in the direction of the axis about which the plate or table brotates-and this support i's provided with a screw-threaded portion uponwhich is loosely movable an arm c, which may be held in any positiondesired `by means of nuts p. In the outer ends of the arm o are adaptedto slide vertically the rods cl of plungersor holders d, which may beprovided with an elastic facing, such as a leather facing, at thebottom. The upper portions of the rods d are screw-threaded and areengaged by nuts e, provided with handles, whereby they may be turnedrelatively to the arm c, while a vertical movement of said nuts isprevented in any suitable manner. To hold the nuts c in position afteradjustment, I may employ check-nuts e. The trunnion b', which serves tojournal the table or support b, is hollow, as shown, and is providedwith a partition s, which divides the interior of the tru nnion into twochambers. The upper chamber communicates with the tubular support f, atthe top of which is a stufng-box Z, connected with a pipe t forsupplying a heating agent, preferably steam. With the upper chamber ofthe trunnion b' also communicate pipes g having val ves o and leading tonozzles g',which are lo* cated above the table or support h, the latterbeing preferably provided with depressions b2. IIhe nozzles g may, asshown,consist simply of a piece of perforated pipe. From the depressions b2 pipes h lead to the loWer chamber of the trnnnion b', theconnection being controlled by valves o. The lower chamber of thetrunnion b' further communicates with a pipe q, a stuffing-box k beingprovided where this pipe enters the trunnion, and this outletpipe q ispreferably led through a receptacle m and is formed with a heating-coilq in said receptacle. This receptacle is adapted to contain the paint orother liquid with which the metallic articles are to be coated.

The articles to be treated are received between the plate or table b andthe plungers d. Preferably washers n are placed on the table o to engagethe lower edges of the articles. I have shown tapering boxes u, which,as represented, are placed in the apparatus upside down; but it will beunderstood that the same apparatus may be used to receive and treatarticles open at both ends-such as, for instance, pipes-in which casethe plun gers d would close the upper ends of the articles. Inoperation, the articles having been placed on the support b and fastenedthereon by the nuts e and plungers d, steam or some other heating agentis admitted through the pipe t, the hollow standard f, the upper chamberof the trunnion b', and pipes g, with their nozzles g', into theinterior of the articles. The articles then become heated and expand.The steam or other heating agent escapes through the pipes h and q andheats the paint or other coating substance which is in the receptacle m.While the articles are hot the,`

hot coating substance is applied on the outrule, one coating will besufficient.

side of the articles in any suitable manner, as by means of a brush,and, if desired, this operation may be repeated, although, as a By theuse of the Valves 0 I am enabled to admit the steam to both articles atthe same time or to one of them only, as desired. I consider it best to.rst admit steam only to one article, then to coat this articleexteriorly as described, and then to shut off steam from this articleand allow it to pass into the other article. As soon as steam is shutoff the cooling of the article and of the coating will cause'the coatingto solidify, and when the operation is completed the coating will befound to be uniformly applied and its consistency will be like that ofrubber or asphalt. I have ascertained that a coating thus appliedprotects the surface of the article efficiently against the action ofthe atmosphere andalso against stronger influences, as the attack byacids or brine. The procedure hereinbefore described does not take muchtime, as the cooling which takes place after the shutting off of thesteam requiresno more than two or three minutes.

I claim as my invention and desire to secure by Letters Patentl. In anapparatus of the class described, the combination of a support or base,atable mounted to turn thereon, a nozzle carried by the table, and meansfor holding an article on the table in such position that the nozzlewill be within the article.

2. In an apparatus of the class described, the combination with a baseor support, a table mounted to turn on said support, a nozzle carried bythe table and means for holding an article in position on the table.

3. In an apparatus of the class described, the combination with asupport, of a table mounted to turn thereon and having a holor channelconnected with the other chamber and leading to the said table, andmeans for holding an article on the table.

4. The combination of a table having a hollow portion divided into twochambers, anozzle and a supply pipe or channel for a heating agentconnected with one of said chambers, an outlet pipe or channel connectedwith the other chamber, and means for holding an article on the tableadjacent to the nozzle and to one end of the outlet-channel.

5. In an apparatus of the class described, the combination of a tableprovided with a hollow portion divided into two chambers, a supply pipeor channel for a heating agent connected with one of said chambers, anozzle arranged adjacent to the table and connected with the samechamber, a discharge channel or pipe connected with the table and withthe other chamber, a vessel for containing paint or other coatingmaterial, and an outlet-channel leading from the last-named chamberthrough the said vessel.

6. In an apparatus of the class described, the combination with thesupport or base, of a table carried thereby and provided with a verticaltrunnion about which it is adapted to rotate, said trunnion being hollowand being divided into two chambers, a tubular standard connected withthe upper chamber of the trunnion, means adjustably carried by saidstandard for holding an article between said means and the table, anozzle carried by the table and in communication with the upper cham berof the trunnion, and a discharge pipe or channel connected with thetable and leading to the lower chamber of the trunnion.

ln witness whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOSEF HRONECK.

Witnesses:

H. W. HARRIS, OHAS. F. SoMMERs.

